Community

Topic: Geo Augmented Markers

show/hide Google maps (SOLVED)

Fabrizio

Friday, May 5, 2017

Hi,

I'm wondering if it would be possibile to keep only the augmented reality view, in a configurable way or by hiding the map. If not (as I've seen in a similar post), if it's in the roadmap.
Is it possible to listen to the event showAR/showMap in some way?

I noticed that the event onMapOrCameraClicked is never called and the event onGeoLocationChanged is called only once entering the map. No problem with onGeoElement. Can it be or am I wrong in something?

Thank you for your reply

Support Team (expert)

Wednesday, May 10, 2017

Hi,
at this moment, there is no way to keep only the augmented reality view on screen. As suggested trick, you should attach an observer event to Google Maps alpha property like this:
// @property (nonatomic) GMSMapView * mapView; self.mapView=[[self valueForKey:@"googlemap"] valueForKey:@"mapView"]; [self addObserver:self forKeyPath:@"mapView.alpha" options:NSKeyValueObservingOptionNew | NSKeyValueObservingOptionOld context:nil];
Then, on callback method you should manage alpha changing value:
-(void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context { if ([keyPath isEqualToString:@"mapView.alpha"]) { .... }
Concerning onMapOrCameraClicked event, we checked that is a bug, so we will fix it as soon as possible.
On the other side, onGeoLocationChanged method calling could be configurable using two instance variables:

float _minDistanceGeolocationChange -> minimum distance (in meters) between two consecutive onGeoLocationChanged method calling
float _minTimeGeolocationChange -> minimum time (in seconds) between two consecutive onGeoLocationChanged method calling

You should set this values (in viewDidLoad method for example) as follow:

[[self valueForKey:@"_geoManager"] setValue:@(1.f) forKey:@"_minDistanceGeolocationChange"];

[[self valueForKey:@"_geoManager"] setValue:@(0.f) forKey:@"_minTimeGeolocationChange"];

Best,